Function Grapher and Calculator

My idea is that we can use this thing to solve or illustrate problems, so I placed a special "Link" section - you can copy-and-paste the "forum" link into your message, and it will re-create the graph you made like this: Plot of 3*x-7 vs -x-2 or this: Plot of cos(x^2)-x. Have a try and tell me what you think.

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

Re: Function Grapher and Calculator

Bump.

Some people have been referring to this in Help Me topics, so I thought this topic should be revisited.

As ganesh said earlier, letting the axes have different scales would be extremely useful.Also, in asymptotic graphs that go to -infinity from one side of a certain x-value and +infinity from the other, the grapher tries to join them with a vertical line.I'm not sure how easy that would be to fix though.

Re: Function Grapher and Calculator

I've been spending about 2 hours solid fiddling with this function grapher.It is really great the way you can pan around.I was examining what happens when you add two sine waves together with similar frequencies,and comparing this to the 2sin(average)cos(halfDifference) formula, which I see how itworks on paper by the way with a drawing, but anyway, after about an hour with theawesome grapher you made, I came across some instances when occasional linesare not printed on the screen. I made some screen prints, in case you are interested.It is a pretty rare occurrence and when I pan around by a few pixels, then the missinglines show up on the screen. But overall, the grapher is beautiful and very, very nice.Just thought I'd let you know. I took some screen shots if you ever want to see the missing lines.

Re: Function Grapher and Calculator

You can also find the missing lines with y=x^2,if you zoom out so 10000 units is about one inch, andthen pan upward a few screens, then the left or rightside a the parabola might appear without the other side.Here is a picture of some trig...If you pan around by 2 or 3 pixels at a time by clickingnear the middle, then the lines will appear for someclicks, and then disappear for a few clicks, and if youpan back, it is always the same locations that triggerthis when you find the problem, so it isn't intermittant I guess.

Re: Function Grapher and Calculator

MathsIsFun wrote:

The Function Grapher and Calculator is ready for you guys to try out. There are probably still bugs, and I don't mind if you tell me about them.

My idea is that we can use this thing to solve or illustrate problems, so I placed a special "Link" section - you can copy-and-paste the "forum" link into your message, and it will re-create the graph you made Have a try and tell me what you think.

I think you have a winner. Graphs are a big help in the understanding of math.

Re: Function Grapher and Calculator

KrazyKyngeKorny wrote:

Graphs are a big help in the understanding of math.

Yes, well said, especially in determining the number of zeroes that a polynomial has and where they are. Other types of functions even more so! With the new graphing calculators and CAS they are fun to do also. When I started they only gave us a beach full of sand to draw on and some pebbles to count with. Some of us were eaten by sharks, math was more dangerous then.

In mathematics, you don't understand things. You just get used to them.If it ain't broke, fix it until it is. Always satisfy the Prime Directive of getting the right answer above all else.